MACK DM 1975: STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM

General Information

NHTSA Campaign ID Number: 78V172000

Make Model Year
MACK DM 1975
Date Owners Notified Date Received by ODI Date Added to Database
1979-02-22 1978-08-08 1979-10-12

Production Dates: 1974-06-01 - 1978-03-01

Manufacturers Involved: Mack Trucks, Inc.

Component: STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM

Potential Number Of Units Affected: 13800

Report Initiator: MFR MFR Report

Summary

THE EXISTING CROSS STEERING ARMS MAY HAVE INSUFFICIENT FATIGUE LIFE IN THE NECK AREA. THIS IS NEAR THE BOSS FOR THE CROSS STEERING TUBE BALL JOINT CONNECTION. FAILURE OF EITHER OF THE CROSS STEERING LEVERS COULD LEAD TO LOSS OF STEERING CONTROL OF THE RIGHT FRONT WHEEL.

Remedy

THE DEALER WILL INSPECT AND, IF NECESSARY, INSTALL CROSS STEERING ARMS OF IMPROVED DESIGN AND GREATER STRENGTH.

Notes

VEHICLE DESCRIPTION: TRUCK TRACTORS.SYSTEM: STEERING; STEERING ARM.CONSEQUENCES OF DEFECT: LOSS OF STEERING CONTROL COULD LEAD TO LOSS OF VEHICLECONTROL AND AN ACCIDENT.